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<head><meta charset="utf-8"><title>weekly meeting 2019-11-21 #54818 · t-compiler · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/index.html">t-compiler</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html">weekly meeting 2019-11-21 #54818</a></h3>

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<a name="181302261"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181302261" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181302261">(Nov 21 2019 at 13:07)</a>:</h4>
<p>Hi <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> ; the triage meeting will be starting in 1 hours 53 minutes</p>



<a name="181302321"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181302321" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181302321">(Nov 21 2019 at 13:08)</a>:</h4>
<p>I will be doing <a href="#narrow/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-11-21.20.2354818/near/181302270" title="#narrow/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-11-21.20.2354818/near/181302270">pre-triage in a parallel topic</a></p>



<a name="181302345"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181302345" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181302345">(Nov 21 2019 at 13:08)</a>:</h4>
<p>This week we have a WG check-in scheduled for WG-traits</p>



<a name="181302382"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181302382" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181302382">(Nov 21 2019 at 13:09)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> do you think you'll want to report anything? (Or identify someone else to do reporting?)</p>



<a name="181302532"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181302532" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181302532">(Nov 21 2019 at 13:11)</a>:</h4>
<p>in any case, inspired by last week's steering meeting about WG's, I have created a dedicated zulip topic in #wg-traits for this: <a href="#narrow/stream/144729-wg-traits/topic/WG-checkin.20notes/near/181302487" title="#narrow/stream/144729-wg-traits/topic/WG-checkin.20notes/near/181302487">WG checkin notes</a></p>



<a name="181302615"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181302615" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181302615">(Nov 21 2019 at 13:12)</a>:</h4>
<p>(and I'll add similar note taking topics for next weeks' WG's too)</p>



<a name="181312141"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312141" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312141">(Nov 21 2019 at 15:00)</a>:</h4>
<p>Hi <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span>! Add a <span aria-label="wave" class="emoji emoji-1f44b" role="img" title="wave">:wave:</span> emoji to show you're here :)</p>



<a name="181312174"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312174" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312174">(Nov 21 2019 at 15:01)</a>:</h4>
<p>We'll start off with five minutes for:</p>



<a name="181312180"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312180" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312180">(Nov 21 2019 at 15:01)</a>:</h4>
<h2>Announcements</h2>



<a name="181312199"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312199" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312199">(Nov 21 2019 at 15:01)</a>:</h4>
<p>I'm trying something new this week: I've tried to predraft the agenda into a <a href="https://hackmd.io/9FtUtPQSSc23UiMAHGwaOA?view" target="_blank" title="https://hackmd.io/9FtUtPQSSc23UiMAHGwaOA?view">hackmd</a></p>



<a name="181312258"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312258" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312258">(Nov 21 2019 at 15:02)</a>:</h4>
<p>(this is inspired by <span class="user-mention" data-user-id="126931">@centril</span> 's practice at the lang team mtgs, though they use <a href="http://paper.dropbox.com" target="_blank" title="http://paper.dropbox.com">paper.dropbox.com</a>)</p>



<a name="181312286"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312286" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312286">(Nov 21 2019 at 15:02)</a>:</h4>
<p>my main motivation for this was to try to bias the nominations list towards people who've bribed me accordingly.</p>



<a name="181312327"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312327" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312327">(Nov 21 2019 at 15:02)</a>:</h4>
<p><a href="http://perf.rust-lang.org" target="_blank" title="http://perf.rust-lang.org">perf.rust-lang.org</a> will be switching to a new collection server, which means that all old data will be gone from the official server (but not actually deleted) sometime in the next week</p>



<a name="181312342"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312342" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312342">(Nov 21 2019 at 15:03)</a>:</h4>
<p>(what's the currency for bribes? ^^ -- r+ses?)</p>



<a name="181312352"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312352" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312352">(Nov 21 2019 at 15:03)</a>:</h4>
<p>const prop on by default <a href="https://github.com/rust-lang/rust/pull/66074" target="_blank" title="https://github.com/rust-lang/rust/pull/66074">landed</a> on the 19th with a nice drop on a number of perf metrics <a href="https://perf.rust-lang.org/?start=2019-11-18&amp;end=2019-11-19&amp;absolute=true&amp;stat=instructions%3Au" target="_blank" title="https://perf.rust-lang.org/?start=2019-11-18&amp;end=2019-11-19&amp;absolute=true&amp;stat=instructions%3Au">https://perf.rust-lang.org/?start=2019-11-18&amp;end=2019-11-19&amp;absolute=true&amp;stat=instructions%3Au</a></p>



<a name="181312365"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312365" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312365">(Nov 21 2019 at 15:03)</a>:</h4>
<p><span class="user-mention" data-user-id="116122">@simulacrum</span>  is the deletion something to celebrate or mourn ?</p>



<a name="181312396"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312396" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312396">(Nov 21 2019 at 15:03)</a>:</h4>
<blockquote>
<p>(what's the currency for bribes? ^^ -- r+ses?)</p>
</blockquote>
<p>work-stealing open P-high issues I think.</p>



<a name="181312413"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312413" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312413">(Nov 21 2019 at 15:03)</a>:</h4>
<p>depends on perspective</p>



<a name="181312475"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312475" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312475">(Nov 21 2019 at 15:04)</a>:</h4>
<p><span class="user-mention" data-user-id="116122">@simulacrum</span> okay, I might follow up with you about this afterward</p>



<a name="181312492"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312492" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312492">(Nov 21 2019 at 15:04)</a>:</h4>
<p>Happy to discuss further :)</p>



<a name="181312516"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312516" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312516">(Nov 21 2019 at 15:04)</a>:</h4>
<p>Oh, in case you all didn't see it, I wrote a blog post about <a href="http://blog.pnkfx.org/blog/2019/11/18/rust-bug-minimization-patterns/" target="_blank" title="http://blog.pnkfx.org/blog/2019/11/18/rust-bug-minimization-patterns/">minimizing rustc bugs</a></p>



<a name="181312541"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312541" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312541">(Nov 21 2019 at 15:04)</a>:</h4>
<p>its ... long. Just like the bugs you're reducing.</p>



<a name="181312570"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312570" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312570">(Nov 21 2019 at 15:05)</a>:</h4>
<p>(I welcome posts on blog post minimization patterns)</p>



<a name="181312595"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312595" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312595">(Nov 21 2019 at 15:05)</a>:</h4>
<p>/me likes shrinking easy ICEs that fit into the playground</p>



<a name="181312701"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312701" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312701">(Nov 21 2019 at 15:06)</a>:</h4>
<p>so lets see, lets start with beta-nominations.We have one</p>



<a name="181312709"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312709" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312709">(Nov 21 2019 at 15:06)</a>:</h4>
<p>“Do not ICE on trait aliases with missing obligations” <a href="https://github.com/rust-lang/rust/issues/66392" target="_blank" title="https://github.com/rust-lang/rust/issues/66392">#66392</a></p>



<a name="181312773"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312773" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312773">(Nov 21 2019 at 15:07)</a>:</h4>
<p>wait, heh</p>



<a name="181312792"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312792" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312792">(Nov 21 2019 at 15:07)</a>:</h4>
<p>we accepted this last week , and I wrote a comment saying so today</p>



<a name="181312796"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312796" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312796">(Nov 21 2019 at 15:07)</a>:</h4>
<p>but forgot to tag it</p>



<a name="181312826"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312826" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312826">(Nov 21 2019 at 15:07)</a>:</h4>
<p>so great</p>



<a name="181312876"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312876" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312876">(Nov 21 2019 at 15:08)</a>:</h4>
<p>we've got a bunch of <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=+label%3Astable-nominated+label%3AT-compiler+-label%3Astable-accepted+" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=+label%3Astable-nominated+label%3AT-compiler+-label%3Astable-accepted+">stable-nominations</a> to go through</p>



<a name="181312892"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312892" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312892">(Nov 21 2019 at 15:08)</a>:</h4>
<p>stable-nom “Do not ICE on trait aliases with missing obligations” <a href="https://github.com/rust-lang/rust/issues/66392" target="_blank" title="https://github.com/rust-lang/rust/issues/66392">#66392</a></p>



<a name="181312931"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312931" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312931">(Nov 21 2019 at 15:08)</a>:</h4>
<p>feels safe</p>



<a name="181312975"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312975" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312975">(Nov 21 2019 at 15:09)</a>:</h4>
<p>its a little bit larger than I'd like for something that does not seem to be fixing a mission critical issue</p>



<a name="181312994"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181312994" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181312994">(Nov 21 2019 at 15:09)</a>:</h4>
<p>but if people are okay with it, i won't stop it</p>



<a name="181313012"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313012" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313012">(Nov 21 2019 at 15:09)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> do you have thoughts?</p>



<a name="181313016"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313016" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313016">(Nov 21 2019 at 15:09)</a>:</h4>
<p>Leave the "should we make point release?" to T-release ;)</p>



<a name="181313024"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313024" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313024">(Nov 21 2019 at 15:09)</a>:</h4>
<p>Voting on my own PR feels funny</p>



<a name="181313076"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313076" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313076">(Nov 21 2019 at 15:10)</a>:</h4>
<p>I'm not talking about the "make point release"</p>



<a name="181313077"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313077" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313077">(Nov 21 2019 at 15:10)</a>:</h4>
<p><span class="user-mention" data-user-id="119031">@Esteban Küber</span>  I know how you feel</p>



<a name="181313085"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313085" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313085">(Nov 21 2019 at 15:10)</a>:</h4>
<p>I'm not sure</p>



<a name="181313093"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313093" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313093">(Nov 21 2019 at 15:10)</a>:</h4>
<p>I'm just talking about "is this worth the effort"</p>



<a name="181313113"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313113" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313113">(Nov 21 2019 at 15:10)</a>:</h4>
<p>but I agree it feels safe</p>



<a name="181313195"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313195" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313195">(Nov 21 2019 at 15:11)</a>:</h4>
<p>okay well I guess I'll mark as stable-accepted</p>



<a name="181313205"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313205" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313205">(Nov 21 2019 at 15:11)</a>:</h4>
<p>this is an unstable feature?</p>



<a name="181313243"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313243" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313243">(Nov 21 2019 at 15:11)</a>:</h4>
<p><span class="user-mention" data-user-id="124287">@mw</span> the ICE can be triggered without the gate</p>



<a name="181313313"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313313" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313313">(Nov 21 2019 at 15:12)</a>:</h4>
<p>(the same conversation happened last week too. <span class="user-mention" data-user-id="119031">@Esteban Küber</span> that's a vote for putting in tests explicitly)</p>



<a name="181313342"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313342" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313342">(Nov 21 2019 at 15:12)</a>:</h4>
<p>ok</p>



<a name="181313357"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313357" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313357">(Nov 21 2019 at 15:12)</a>:</h4>
<p>okay lets move along</p>



<a name="181313364"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313364" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313364">(Nov 21 2019 at 15:12)</a>:</h4>
<p>stable-nom "Fix ICE when trying to suggest Type&lt;&gt; instead of Type()" <a href="https://github.com/rust-lang/rust/issues/66390" target="_blank" title="https://github.com/rust-lang/rust/issues/66390">#66390</a></p>



<a name="181313461"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313461" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313461">(Nov 21 2019 at 15:13)</a>:</h4>
<p>seems less risky to me than previous one</p>



<a name="181313511"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313511" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313511">(Nov 21 2019 at 15:14)</a>:</h4>
<p>(which was already noted to be non-risky)</p>



<a name="181313562"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313562" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313562">(Nov 21 2019 at 15:14)</a>:</h4>
<p>so I'll mark  stable-accepted if no one argues otherwise by end of meeting</p>



<a name="181313574"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313574" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313574">(Nov 21 2019 at 15:14)</a>:</h4>
<p>stable-nom “Do not ICE on recovery from unmet associated type bound obligation” <a href="https://github.com/rust-lang/rust/issues/66388" target="_blank" title="https://github.com/rust-lang/rust/issues/66388">#66388</a></p>



<a name="181313666"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313666" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313666">(Nov 21 2019 at 15:15)</a>:</h4>
<p>I'm staring at this diff and saying "oh god do I not know Rust"</p>



<a name="181313689"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313689" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313689">(Nov 21 2019 at 15:16)</a>:</h4>
<p>why did this make a difference here</p>



<a name="181313739"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313739" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313739">(Nov 21 2019 at 15:16)</a>:</h4>
<p>temporary lifetime rules</p>



<a name="181313745"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313745" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313745">(Nov 21 2019 at 15:16)</a>:</h4>
<p>the <code>.borrow_mut()</code> expires at the end of the let</p>



<a name="181313764"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313764" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313764">(Nov 21 2019 at 15:16)</a>:</h4>
<p>because <code>if let</code> desugars to <code>match</code> and the lifetime ends at the end of the <code>match</code></p>



<a name="181313789"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313789" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313789">(Nov 21 2019 at 15:16)</a>:</h4>
<p>and this causes the compiler to ICE?</p>



<a name="181313793"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313793" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313793">(Nov 21 2019 at 15:16)</a>:</h4>
<p>whereas <code>if</code> has <code>DropTemps(..)</code> on the condition</p>



<a name="181313798"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313798" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313798">(Nov 21 2019 at 15:17)</a>:</h4>
<p>still weird</p>



<a name="181313821"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313821" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313821">(Nov 21 2019 at 15:17)</a>:</h4>
<blockquote>
<p>and this causes the compiler to ICE?</p>
</blockquote>
<p>inside the <code>             mutate_fullfillment_errors(&amp;mut errors); </code> callback</p>



<a name="181313827"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313827" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313827">(Nov 21 2019 at 15:17)</a>:</h4>
<p>it attempts to acquire the refcell</p>



<a name="181313848"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313848" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313848">(Nov 21 2019 at 15:17)</a>:</h4>
<p><em>aha</em></p>



<a name="181313849"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313849" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313849">(Nov 21 2019 at 15:17)</a>:</h4>
<p>in the old code, that was a recursive ref-cell acquire</p>



<a name="181313856"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313856" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313856">(Nov 21 2019 at 15:17)</a>:</h4>
<p>The ICE Is <code>thread 'rustc' panicked at 'already borrowed: BorrowMutError', src/libcore/result.rs:1165:5</code></p>



<a name="181313871"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313871" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313871">(Nov 21 2019 at 15:17)</a>:</h4>
<p>subtle indeed</p>



<a name="181313875"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313875" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313875">(Nov 21 2019 at 15:17)</a>:</h4>
<p>classic</p>



<a name="181313880"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313880" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313880">(Nov 21 2019 at 15:17)</a>:</h4>
<p>okay, thanks</p>



<a name="181313888"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313888" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313888">(Nov 21 2019 at 15:17)</a>:</h4>
<blockquote>
<p>still weird</p>
</blockquote>
<p>Oh yeah... this is something we might want to change with an edition for <code>if let</code></p>



<a name="181313893"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313893" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313893">(Nov 21 2019 at 15:17)</a>:</h4>
<p>very confusing indeed</p>



<a name="181313952"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313952" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313952">(Nov 21 2019 at 15:18)</a>:</h4>
<p>I do think we should consider tweaking the temporary lifetime rules</p>



<a name="181313968"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313968" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313968">(Nov 21 2019 at 15:18)</a>:</h4>
<p>okay well similarly, lets stable-accept this unless I hear an objection by meetings end</p>



<a name="181313970"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313970" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313970">(Nov 21 2019 at 15:18)</a>:</h4>
<p>but not at this moment :)</p>



<a name="181313987"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181313987" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181313987">(Nov 21 2019 at 15:18)</a>:</h4>
<blockquote>
<p>I do think we should consider tweaking the temporary lifetime rules</p>
</blockquote>
<p>sounds like a steering meeting topic</p>



<a name="181314004"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314004" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314004">(Nov 21 2019 at 15:18)</a>:</h4>
<p>stable-nom: “find_deprecation: deprecation attr may be ill-formed meta.” <a href="https://github.com/rust-lang/rust/issues/66381" target="_blank" title="https://github.com/rust-lang/rust/issues/66381">#66381</a></p>



<a name="181314049"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314049" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314049">(Nov 21 2019 at 15:19)</a>:</h4>
<blockquote>
<p>sounds like a steering meeting topic</p>
</blockquote>
<p>maybe? not really a "compiler team" meeting thing, more of an RFC/lang team thing I think</p>



<a name="181314051"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314051" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314051">(Nov 21 2019 at 15:19)</a>:</h4>
<blockquote>
<p>sounds like a steering meeting topic</p>
</blockquote>
<p>(+ RFC I'd say; it's fairly subtle)</p>



<a name="181314062"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314062" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314062">(Nov 21 2019 at 15:19)</a>:</h4>
<p>true dat</p>



<a name="181314104"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314104" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314104">(Nov 21 2019 at 15:20)</a>:</h4>
<blockquote>
<p>maybe? not really a "compiler team" meeting thing, more of an RFC/lang team thing I think</p>
</blockquote>
<p>Tho T-compiler's input is appreciated</p>



<a name="181314181"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314181" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314181">(Nov 21 2019 at 15:20)</a>:</h4>
<p>okay, for <a href="https://github.com/rust-lang/rust/issues/66381" target="_blank" title="https://github.com/rust-lang/rust/issues/66381">#66381</a>, lets stable-accept this unless I hear an objection by meetings end</p>



<a name="181314197"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314197" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314197">(Nov 21 2019 at 15:20)</a>:</h4>
<blockquote>
<p>stable-nom: “find_deprecation: deprecation attr may be ill-formed meta.” <a href="https://github.com/rust-lang/rust/issues/66381" target="_blank" title="https://github.com/rust-lang/rust/issues/66381">#66381</a></p>
</blockquote>
<p>so on this one: I thnk it's safe, but I do wonder if a <code>delay_span_bug</code> would be appropriate</p>



<a name="181314220"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314220" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314220">(Nov 21 2019 at 15:20)</a>:</h4>
<p>but since it already landed etc etc...seems fine</p>



<a name="181314272"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314272" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314272">(Nov 21 2019 at 15:21)</a>:</h4>
<p>is it a sign of an internal compiler problem?</p>



<a name="181314278"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314278" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314278">(Nov 21 2019 at 15:21)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> heh... <a href="https://github.com/rust-lang/rust/compare/b522dd84fcc3a80ef92a6fb254eaa0cc3237a4a6..91aadf030548214da5a8f39a1b1dbd21db125625" target="_blank" title="https://github.com/rust-lang/rust/compare/b522dd84fcc3a80ef92a6fb254eaa0cc3237a4a6..91aadf030548214da5a8f39a1b1dbd21db125625">https://github.com/rust-lang/rust/compare/b522dd84fcc3a80ef92a6fb254eaa0cc3237a4a6..91aadf030548214da5a8f39a1b1dbd21db125625</a></p>



<a name="181314286"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314286" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314286">(Nov 21 2019 at 15:21)</a>:</h4>
<p>I thought this nonetheless arose due to malformed input</p>



<a name="181314354"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314354" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314354">(Nov 21 2019 at 15:21)</a>:</h4>
<p>it does</p>



<a name="181314367"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314367" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314367">(Nov 21 2019 at 15:22)</a>:</h4>
<p>point is, it would be a bug if an error had not been reported</p>



<a name="181314476"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314476" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314476">(Nov 21 2019 at 15:22)</a>:</h4>
<p>okay well anyway we can move along</p>



<a name="181314490"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314490" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314490">(Nov 21 2019 at 15:22)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> it shouldn't be; we do syntactic validation in ast_validation but then we don't transform</p>



<a name="181314508"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314508" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314508">(Nov 21 2019 at 15:23)</a>:</h4>
<p>stable-nom: “parser: don’t use unreachable!() in fn unexpected.” <a href="https://github.com/rust-lang/rust/issues/66361" target="_blank" title="https://github.com/rust-lang/rust/issues/66361">#66361</a></p>



<a name="181314586"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314586" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314586">(Nov 21 2019 at 15:23)</a>:</h4>
<p>( Btw, I can totally recommend <a href="https://lexi-lambda.github.io/blog/2019/11/05/parse-don-t-validate/" target="_blank" title="https://lexi-lambda.github.io/blog/2019/11/05/parse-don-t-validate/">https://lexi-lambda.github.io/blog/2019/11/05/parse-don-t-validate/</a> -- we might want to take inspiration from that in general )</p>



<a name="181314604"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314604" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314604">(Nov 21 2019 at 15:24)</a>:</h4>
<p>in this case ... maybe we should be more caution ...?</p>



<a name="181314647"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314647" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314647">(Nov 21 2019 at 15:24)</a>:</h4>
<p>or no</p>



<a name="181314663"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314663" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314663">(Nov 21 2019 at 15:24)</a>:</h4>
<p>the diff is strictly better, I guess, than what we had before</p>



<a name="181314675"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314675" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314675">(Nov 21 2019 at 15:24)</a>:</h4>
<p>I was just internally musing about the <code>delay_span_bug</code> note here from <span class="user-mention" data-user-id="119031">@Esteban Küber</span></p>



<a name="181314707"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314707" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314707">(Nov 21 2019 at 15:24)</a>:</h4>
<p>so never mind me; we can wait until we see ICE's in the wild to suggest <code>delay_span_bug</code> here.</p>



<a name="181314772"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314772" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314772">(Nov 21 2019 at 15:25)</a>:</h4>
<p>so once again, i'll mark <a href="https://github.com/rust-lang/rust/issues/66361" target="_blank" title="https://github.com/rust-lang/rust/issues/66361">#66361</a> as stable-accepted later if I don't see an objection by end of meeting</p>



<a name="181314803"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314803" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314803">(Nov 21 2019 at 15:25)</a>:</h4>
<p>(trying hard to be better about time todya)</p>



<a name="181314864"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314864" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314864">(Nov 21 2019 at 15:26)</a>:</h4>
<p>we have 11 nominated issues</p>



<a name="181314893"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314893" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314893">(Nov 21 2019 at 15:26)</a>:</h4>
<p>lets see how many we can get through in 20 to 25 minutes</p>



<a name="181314905"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314905" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314905">(Nov 21 2019 at 15:26)</a>:</h4>
<p>nominated: “sysroot spans are not printed on some targets (affected: Debian, rust-lang’s own i586; unaffected: Fedora)” <a href="https://github.com/rust-lang/rust/issues/53081" target="_blank" title="https://github.com/rust-lang/rust/issues/53081">#53081</a></p>



<a name="181314949"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314949" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314949">(Nov 21 2019 at 15:27)</a>:</h4>
<p><span class="user-mention" data-user-id="119031">@Esteban Küber</span> you were pushing for this, want to summarize?</p>



<a name="181314998"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181314998" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181314998">(Nov 21 2019 at 15:27)</a>:</h4>
<p>I've been dreading looking closer at this</p>



<a name="181315028"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315028" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315028">(Nov 21 2019 at 15:27)</a>:</h4>
<p>Spans to stdlib work and do what you want, but it doesn't work in some 32bit targets</p>



<a name="181315130"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315130" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315130">(Nov 21 2019 at 15:28)</a>:</h4>
<p>My understanding is due to incorrect packaging making the compiler not find std due to bad paths</p>



<a name="181315134"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315134" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315134">(Nov 21 2019 at 15:28)</a>:</h4>
<p>what do we want to do about this? Should we try to figure out what the source of the discrepancy is? Or should we attempt to apply some further normalization to the test output to sidestep this?</p>



<a name="181315158"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315158" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315158">(Nov 21 2019 at 15:28)</a>:</h4>
<p>This makes tests that point into std fail in those targets</p>



<a name="181315213"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315213" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315213">(Nov 21 2019 at 15:29)</a>:</h4>
<p>if it's just paths being wrong that would make me very happy, I was under the assumption that this was some weird hashing bug (because we ignore existing sources at the same paths if the hashes changed)</p>



<a name="181315271"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315271" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315271">(Nov 21 2019 at 15:29)</a>:</h4>
<p>Ah! If it is the hashing it would be trickier...</p>



<a name="181315300"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315300" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315300">(Nov 21 2019 at 15:29)</a>:</h4>
<p>I'm under impression that in some cases we just don't emit the span info at all? (Which may be an artifact of the path changing, for all i know?) Like this <a href="https://github.com/rust-lang/rust/issues/53081#issuecomment-447589148" target="_blank" title="https://github.com/rust-lang/rust/issues/53081#issuecomment-447589148">comment</a></p>



<a name="181315301"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315301" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315301">(Nov 21 2019 at 15:29)</a>:</h4>
<p>An option is to explicitly ignore those platforms when testing</p>



<a name="181315363"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315363" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315363">(Nov 21 2019 at 15:30)</a>:</h4>
<p>But I know petrochenkov was against that</p>



<a name="181315434"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315434" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315434">(Nov 21 2019 at 15:30)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> the path saved in the rmeta (which may be affected by remapping? not sure how much) has to exist and the loaded contents have to match a precomputed hash, but if those conditions are met, we should always emit a snippet</p>



<a name="181315450"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315450" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315450">(Nov 21 2019 at 15:30)</a>:</h4>
<p>I think <span class="user-mention" data-user-id="123856">@Vadim Petrochenkov</span> 's <a href="https://github.com/rust-lang/rust/pull/65421#issuecomment-544261831" target="_blank" title="https://github.com/rust-lang/rust/pull/65421#issuecomment-544261831">alternative suggestion</a> there was to ignore a full target triple...</p>



<a name="181315505"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315505" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315505">(Nov 21 2019 at 15:31)</a>:</h4>
<p>which may or may not be what you are suggesting, <span class="user-mention" data-user-id="119031">@Esteban Küber</span> ? I just know <span class="user-mention" data-user-id="123856">@Vadim Petrochenkov</span> was against ignoring all of <code>// x86</code></p>



<a name="181315526"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315526" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315526">(Nov 21 2019 at 15:31)</a>:</h4>
<p>there are diagnostics which check for cross-crate spans and avoid mentioning those files entirely (so they wouldn't show up in the error message at all, regardless of snippet), but the ones that don't should be consistent in their behavior</p>



<a name="181315528"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315528" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315528">(Nov 21 2019 at 15:31)</a>:</h4>
<p>it seems like this problem is affecting a lot of people</p>



<a name="181315533"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315533" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315533">(Nov 21 2019 at 15:32)</a>:</h4>
<p>anyway I don't know if we really can resolve all these questions right now</p>



<a name="181315585"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315585" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315585">(Nov 21 2019 at 15:32)</a>:</h4>
<p>I was going to say, "at the same time, I think we should split it out..."</p>



<a name="181315587"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315587" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315587">(Nov 21 2019 at 15:32)</a>:</h4>
<p><span class="user-mention" data-user-id="119009">@eddyb</span> seems like this subject might interact with <a href="https://github.com/rust-lang/rust/pull/66364" target="_blank" title="https://github.com/rust-lang/rust/pull/66364">https://github.com/rust-lang/rust/pull/66364</a> ?</p>



<a name="181315593"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315593" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315593">(Nov 21 2019 at 15:32)</a>:</h4>
<p>Can I get some a subset of the people here willing to spend some time on this??</p>



<a name="181315629"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315629" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315629">(Nov 21 2019 at 15:32)</a>:</h4>
<p>another thing I'm unclear on is whether <code>// ignore-x86</code> affects <code>x86_64</code> as well because that one seems dangerous to ignore</p>



<a name="181315656"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315656" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315656">(Nov 21 2019 at 15:32)</a>:</h4>
<p>(since I expect the vast majority of builds hosts to be x64)</p>



<a name="181315693"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315693" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315693">(Nov 21 2019 at 15:33)</a>:</h4>
<p>well here's the <a href="https://github.com/rust-lang/rust/issues/53081#issuecomment-546603653" target="_blank" title="https://github.com/rust-lang/rust/issues/53081#issuecomment-546603653">relevant dialogue</a></p>



<a name="181315720"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315720" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315720">(Nov 21 2019 at 15:33)</a>:</h4>
<p>I would hope <code>// ignore-x86</code> does not affect <code>x86_64</code>, but I have not tested</p>



<a name="181315738"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315738" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315738">(Nov 21 2019 at 15:33)</a>:</h4>
<p><span class="user-mention" data-user-id="126931">@centril</span> good point, your PR would introduce situations in which the problem can occur (by not destroying the relevant information :P)</p>



<a name="181315788"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315788" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315788">(Nov 21 2019 at 15:34)</a>:</h4>
<p>I can get the triple comment ignore thing going</p>



<a name="181315796"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315796" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315796">(Nov 21 2019 at 15:34)</a>:</h4>
<p>thank you <span class="user-mention" data-user-id="119031">@Esteban Küber</span></p>



<a name="181315818"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315818" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315818">(Nov 21 2019 at 15:34)</a>:</h4>
<p>next up, hopefully quicker</p>



<a name="181315827"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315827" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315827">(Nov 21 2019 at 15:34)</a>:</h4>
<p>I-nominated “Remove pretty printing of specific nodes in AST” <a href="https://github.com/rust-lang/rust/issues/66575" target="_blank" title="https://github.com/rust-lang/rust/issues/66575">#66575</a></p>



<a name="181315854"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315854" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315854">(Nov 21 2019 at 15:35)</a>:</h4>
<p>this is a feature that people want to remove</p>



<a name="181315872"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315872" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315872">(Nov 21 2019 at 15:35)</a>:</h4>
<p>if you don't want it removed, speak up either here or on the PR</p>



<a name="181315892"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315892" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315892">(Nov 21 2019 at 15:35)</a>:</h4>
<p>but I don't think anyone here objects</p>



<a name="181315912"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315912" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315912">(Nov 21 2019 at 15:35)</a>:</h4>
<p>so lets move along</p>



<a name="181315922"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315922" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315922">(Nov 21 2019 at 15:35)</a>:</h4>
<p>I-nominated: “NLL Regressions in 1.40” <a href="https://github.com/rust-lang/rust/issues/66517" target="_blank" title="https://github.com/rust-lang/rust/issues/66517">#66517</a></p>



<a name="181315985"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181315985" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181315985">(Nov 21 2019 at 15:36)</a>:</h4>
<p>Here, there's work to be done</p>



<a name="181316010"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316010" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316010">(Nov 21 2019 at 15:36)</a>:</h4>
<p>depending on your point of view, at least</p>



<a name="181316042"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316042" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316042">(Nov 21 2019 at 15:36)</a>:</h4>
<p>There's one school of thought that says that we owe it to our users to try to put up PRs fixing these crates</p>



<a name="181316078"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316078" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316078">(Nov 21 2019 at 15:37)</a>:</h4>
<p>There's another school of thought that says that this is a largely volunteer driven project and we don't owe nobody nuthin'</p>



<a name="181316110"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316110" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316110">(Nov 21 2019 at 15:37)</a>:</h4>
<p>(and that these are abandonware ^^)</p>



<a name="181316195"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316195" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316195">(Nov 21 2019 at 15:38)</a>:</h4>
<blockquote>
<p>There's another school of thought that says that this is a largely volunteer driven project and we don't owe nobody nuthin'</p>
</blockquote>
<p>can't wait for Rust to become an industry standard while remaining volunteer-driven,</p>



<a name="181316223"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316223" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316223">(Nov 21 2019 at 15:38)</a>:</h4>
<p>what is the assertion that these are abandonware based on? lack of activity?</p>



<a name="181316227"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316227" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316227">(Nov 21 2019 at 15:38)</a>:</h4>
<p>it seems like the abandonware aspect is relevant</p>



<a name="181316240"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316240" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316240">(Nov 21 2019 at 15:38)</a>:</h4>
<p>presumably <span class="user-mention" data-user-id="116113">@lqd</span>'s <a href="https://github.com/rust-lang/rust/issues/66517#issuecomment-557124258" target="_blank" title="https://github.com/rust-lang/rust/issues/66517#issuecomment-557124258">comment</a></p>



<a name="181316249"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316249" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316249">(Nov 21 2019 at 15:38)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> repos marked as archived, I think?</p>



<a name="181316255"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316255" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316255">(Nov 21 2019 at 15:38)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span>  NLL regressions have had warnings that ignore --cap-lints for a long time</p>



<a name="181316264"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316264" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316264">(Nov 21 2019 at 15:38)</a>:</h4>
<p>if they haven't been fixed by now...</p>



<a name="181316276"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316276" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316276">(Nov 21 2019 at 15:39)</a>:</h4>
<p>but I'm not clear on how many add'l projects there are beyond those</p>



<a name="181316304"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316304" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316304">(Nov 21 2019 at 15:39)</a>:</h4>
<p>(I don't know that I agree that ignoring warnings indicates abandonware, but I do agree we've tried hard to let people know what's coming)</p>



<a name="181316319"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316319" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316319">(Nov 21 2019 at 15:39)</a>:</h4>
<p>but archived projects seems pretty unambig :)</p>



<a name="181316329"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316329" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316329">(Nov 21 2019 at 15:39)</a>:</h4>
<p>I feel like we should go to each crate/repository and put in the minimum effort</p>



<a name="181316332"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316332" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316332">(Nov 21 2019 at 15:39)</a>:</h4>
<p>Well, is <code>capnp</code> itself fixed?</p>



<a name="181316338"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316338" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316338">(Nov 21 2019 at 15:39)</a>:</h4>
<p>yes</p>



<a name="181316339"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316339" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316339">(Nov 21 2019 at 15:39)</a>:</h4>
<p>/me still thinks that a 1000 regressions crater run for a stable release is not acceptable, even when <code>cargo update</code> fixes most of them</p>



<a name="181316349"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316349" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316349">(Nov 21 2019 at 15:40)</a>:</h4>
<p>this is a 3y old version</p>



<a name="181316393"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316393" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316393">(Nov 21 2019 at 15:40)</a>:</h4>
<p>but it's still active</p>



<a name="181316402"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316402" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316402">(Nov 21 2019 at 15:40)</a>:</h4>
<p>(<span class="user-mention" data-user-id="116009">@nikomatsakis</span>  it's more like "no one has seen these warnings" rather than "actively ignoring" ^^)</p>



<a name="181316418"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316418" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316418">(Nov 21 2019 at 15:40)</a>:</h4>
<p>also this may be obvious but archived projects are frozen and I don't even know if you can open a PR on them</p>



<a name="181316427"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316427" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316427">(Nov 21 2019 at 15:40)</a>:</h4>
<p>Archived projects I think we're fine to not try to fix</p>



<a name="181316440"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316440" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316440">(Nov 21 2019 at 15:40)</a>:</h4>
<p>I feel a bit confused about the status</p>



<a name="181316444"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316444" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316444">(Nov 21 2019 at 15:40)</a>:</h4>
<p>/me should check with one of the <code>eddyb-abandoned</code> repos</p>



<a name="181316445"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316445" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316445">(Nov 21 2019 at 15:40)</a>:</h4>
<p>but we should do our best to fix anything that's not archived</p>



<a name="181316465"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316465" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316465">(Nov 21 2019 at 15:41)</a>:</h4>
<p>actually, let me try to establish something: One issue here is what is our policy about what to do about the crates here</p>



<a name="181316466"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316466" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316466">(Nov 21 2019 at 15:41)</a>:</h4>
<p>I guess the point is, there are older releases that we didn't see before</p>



<a name="181316470"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316470" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316470">(Nov 21 2019 at 15:41)</a>:</h4>
<p>We have a list of ~80 repositories/crates that are root regressions and some of them are deprecated/archived</p>



<a name="181316479"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316479" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316479">(Nov 21 2019 at 15:41)</a>:</h4>
<p>But... I think that if you care deeply about filing PRs or issues then of course by all means do so...</p>



<a name="181316500"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316500" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316500">(Nov 21 2019 at 15:41)</a>:</h4>
<p>you can't even comment on issues on archived repos (as a  repo owner)</p>



<a name="181316506"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316506" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316506">(Nov 21 2019 at 15:41)</a>:</h4>
<p>My POV is similar (but less strict than <span class="user-mention" data-user-id="121055">@Pietro Albini</span>'s) - we should do our best to minimize stable regressions</p>



<a name="181316520"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316520" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316520">(Nov 21 2019 at 15:41)</a>:</h4>
<p>My other question, though, is: What remains to go through on this list? <span class="user-mention" data-user-id="116113">@lqd</span> did some, but a bunch remain, right, that have not been establhsed as archived/abandonware by these metrics?</p>



<a name="181316530"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316530" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316530">(Nov 21 2019 at 15:41)</a>:</h4>
<p>Yes</p>



<a name="181316557"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316557" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316557">(Nov 21 2019 at 15:42)</a>:</h4>
<p>(but as a matter of general policy I don't think filing PRs or issues should be a requirement)</p>



<a name="181316592"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316592" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316592">(Nov 21 2019 at 15:42)</a>:</h4>
<blockquote>
<p>(but as a matter of general policy I don't think filing PRs or issues should be a requirement)</p>
</blockquote>
<p>I strongly disagree</p>



<a name="181316603"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316603" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Pietro Albini <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316603">(Nov 21 2019 at 15:42)</a>:</h4>
<p>how much do we care about our stability guarantee though?</p>



<a name="181316615"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316615" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316615">(Nov 21 2019 at 15:42)</a>:</h4>
<p>If we're landing a <em>breaking change</em> the least that we should do is to fix things we know are broken</p>



<a name="181316627"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316627" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316627">(Nov 21 2019 at 15:42)</a>:</h4>
<blockquote>
<blockquote>
<p>(but as a matter of general policy I don't think filing PRs or issues should be a requirement)</p>
</blockquote>
<p>I strongly disagree</p>
</blockquote>
<p>I am not sure if the T-compiler triage meeting is the place to resolve this disagreement</p>



<a name="181316636"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316636" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Esteban Küber <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316636">(Nov 21 2019 at 15:42)</a>:</h4>
<p>What do we do about active crates with transitive deps on a now broken archived crate?</p>



<a name="181316676"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316676" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316676">(Nov 21 2019 at 15:43)</a>:</h4>
<p>I understand that we won't fix everything, and I'm not trying to get that</p>



<a name="181316678"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316678" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316678">(Nov 21 2019 at 15:43)</a>:</h4>
<p>it seems like a more fundamental question of a core value that we need to establish consistently across the project, right?</p>



<a name="181316701"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316701" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316701">(Nov 21 2019 at 15:43)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> I'm looking at more rn (some of which are not abandoned)</p>



<a name="181316715"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316715" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316715">(Nov 21 2019 at 15:43)</a>:</h4>
<p>So it is my understanding that our breakage policy is "don't do it" and if you have to, "go fix it"</p>



<a name="181316720"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316720" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316720">(Nov 21 2019 at 15:43)</a>:</h4>
<p>I do feel like we should codify some rules here into an agreed upon procedure-- but I think it makes sense to do our best here</p>



<a name="181316725"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316725" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316725">(Nov 21 2019 at 15:43)</a>:</h4>
<p>What I would like to do, regarding <a href="https://github.com/rust-lang/rust/issues/66517" target="_blank" title="https://github.com/rust-lang/rust/issues/66517">#66517</a>, is at least get a better grip on the to-do list</p>



<a name="181316773"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316773" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316773">(Nov 21 2019 at 15:44)</a>:</h4>
<p>in terms of bucketing the cases of abandonware vs non-abandonware</p>



<a name="181316777"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316777" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316777">(Nov 21 2019 at 15:44)</a>:</h4>
<p>It sounds like <span class="user-mention" data-user-id="116113">@lqd</span> is trying to put together a todo list?</p>



<a name="181316781"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316781" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316781">(Nov 21 2019 at 15:44)</a>:</h4>
<p>(however that criteria is determined)</p>



<a name="181316812"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316812" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316812">(Nov 21 2019 at 15:44)</a>:</h4>
<p>I'm fine with tabling and coming back to it next week with a todo list</p>



<a name="181316815"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316815" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316815">(Nov 21 2019 at 15:44)</a>:</h4>
<p><span class="user-mention" data-user-id="116113">@lqd</span> do you think you are going to be able to do the whole set? I was sort of thinking/hoping we might rope other people in</p>



<a name="181316843"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316843" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316843">(Nov 21 2019 at 15:45)</a>:</h4>
<p>to be clear it's basically clicking through and categorizing, I think it's also fine for the todo list to contain "triage this as abandonware"</p>



<a name="181316848"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316848" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316848">(Nov 21 2019 at 15:45)</a>:</h4>
<p>maybe lets spawn off a parallel zulip topic dedicated to the bucketing effort?</p>



<a name="181316859"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316859" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316859">(Nov 21 2019 at 15:45)</a>:</h4>
<p>I can help out with some of them</p>



<a name="181316872"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316872" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316872">(Nov 21 2019 at 15:45)</a>:</h4>
<p>should we coordinate in <a class="stream" data-stream-id="122657" href="/#narrow/stream/122657-t-compiler.2Fwg-nll">#t-compiler/wg-nll</a> ?</p>



<a name="181316880"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181316880" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> lqd <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181316880">(Nov 21 2019 at 15:45)</a>:</h4>
<p>unlikely that I could do it all by myself, but yeah I'm trying to thin it out</p>



<a name="181317003"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317003" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317003">(Nov 21 2019 at 15:46)</a>:</h4>
<p>okay <span class="user-mention" data-user-id="116009">@nikomatsakis</span> made a topic here: <a href="#narrow/stream/122657-t-compiler.2Fwg-nll/topic/regressions.20in.20.2366517/near/181316916" title="#narrow/stream/122657-t-compiler.2Fwg-nll/topic/regressions.20in.20.2366517/near/181316916">https://rust-lang.zulipchat.com/#narrow/stream/122657-t-compiler.2Fwg-nll/topic/regressions.20in.20.2366517/near/181316916</a></p>



<a name="181317030"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317030" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317030">(Nov 21 2019 at 15:46)</a>:</h4>
<p>I-nominated: “Some features can no longer be controlled by conditional compilation” <a href="https://github.com/rust-lang/rust/issues/65860" target="_blank" title="https://github.com/rust-lang/rust/issues/65860">#65860</a></p>



<a name="181317060"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317060" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317060">(Nov 21 2019 at 15:47)</a>:</h4>
<p>I would prefer skipping that issue for now</p>



<a name="181317079"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317079" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317079">(Nov 21 2019 at 15:47)</a>:</h4>
<p>&amp; it's not urgent</p>



<a name="181317091"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317091" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317091">(Nov 21 2019 at 15:47)</a>:</h4>
<p>welll, the thing I had hoped to figure out last week, was <em>just</em>: who and where we are going to resolve the questions here: Q1: Is it T-lang or T-compiler or both? Q2: Is asynchronous discussion sufficient (with or without an rfcbot poll), or do we need a synchronized meeting (maybe one of the Friday steering meetings)?</p>



<a name="181317123"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317123" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317123">(Nov 21 2019 at 15:47)</a>:</h4>
<p>that is, I don't want/need the full issue resolved. I just want to know if we're going to keep bringing it up at this meeting or not</p>



<a name="181317184"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317184" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317184">(Nov 21 2019 at 15:48)</a>:</h4>
<p>does anyone have any strong opinions on that matter?</p>



<a name="181317193"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317193" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317193">(Nov 21 2019 at 15:48)</a>:</h4>
<p>My suggestion:<br>
- It's both teams<br>
- I can re-nominate it at some point (to save time for now) but let's have some more async discussion</p>



<a name="181317205"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317205" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317205">(Nov 21 2019 at 15:48)</a>:</h4>
<p>if there are no strong opinions, I will probably let it sit as is for now</p>



<a name="181317233"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317233" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317233">(Nov 21 2019 at 15:49)</a>:</h4>
<p><span class="user-mention" data-user-id="126931">@centril</span>'s suggestion sounds reasonable. I myself would like to see a hackmd created that starts to summarize what's going on, which we can edit as we go to include details</p>



<a name="181317264"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317264" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317264">(Nov 21 2019 at 15:49)</a>:</h4>
<p>I can work on that probably, but that's going to take some time</p>



<a name="181317271"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317271" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317271">(Nov 21 2019 at 15:49)</a>:</h4>
<p>okay</p>



<a name="181317296"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317296" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317296">(Nov 21 2019 at 15:49)</a>:</h4>
<p>I'll do one more nominated issue before we move to WG-checkin</p>



<a name="181317316"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317316" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317316">(Nov 21 2019 at 15:49)</a>:</h4>
<p>I-nominated “under latest MinGW, cannot link with C code using stdout” <a href="https://github.com/rust-lang/rust/issues/47048" target="_blank" title="https://github.com/rust-lang/rust/issues/47048">#47048</a></p>



<a name="181317378"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317378" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317378">(Nov 21 2019 at 15:50)</a>:</h4>
<p>(and yeah, if you're looking at the <a href="https://hackmd.io/9FtUtPQSSc23UiMAHGwaOA?view" target="_blank" title="https://hackmd.io/9FtUtPQSSc23UiMAHGwaOA?view">hackmd</a>, I went out of order. sue me.)</p>



<a name="181317414"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317414" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317414">(Nov 21 2019 at 15:50)</a>:</h4>
<p>I just want to know what priority <a href="https://github.com/rust-lang/rust/issues/47048" target="_blank" title="https://github.com/rust-lang/rust/issues/47048">#47048</a> deserves</p>



<a name="181317448"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317448" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317448">(Nov 21 2019 at 15:50)</a>:</h4>
<blockquote>
<p>I can work on that probably, but that's going to take some time</p>
</blockquote>
<p>it doesn't hve to be a work of art, bullet points and links to comments seems ok</p>



<a name="181317471"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317471" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317471">(Nov 21 2019 at 15:51)</a>:</h4>
<p>is this P-high? If so, is there anyone here willing to attack it?</p>



<a name="181317491"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317491" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317491">(Nov 21 2019 at 15:51)</a>:</h4>
<p>MinGW ain't exactly the most popular platform</p>



<a name="181317599"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317599" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317599">(Nov 21 2019 at 15:52)</a>:</h4>
<p>(to be honest I did not realize it was Tier1 until reading <span class="user-mention" data-user-id="211727">@Jonas Schievink</span> 's <a href="https://github.com/rust-lang/rust/issues/47048#issuecomment-555478541" target="_blank" title="https://github.com/rust-lang/rust/issues/47048#issuecomment-555478541">comment</a> ...)</p>



<a name="181317682"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317682" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317682">(Nov 21 2019 at 15:52)</a>:</h4>
<p>does the proposed target tier policy say anything about demoting a target?</p>



<a name="181317750"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317750" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317750">(Nov 21 2019 at 15:53)</a>:</h4>
<p>I'm still trying to catch up</p>



<a name="181317753"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317753" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317753">(Nov 21 2019 at 15:53)</a>:</h4>
<p>it seems the issue here is:</p>



<a name="181317759"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317759" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317759">(Nov 21 2019 at 15:53)</a>:</h4>
<ul>
<li>mingw issues breaking changes</li>
</ul>



<a name="181317768"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317768" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317768">(Nov 21 2019 at 15:53)</a>:</h4>
<ul>
<li>we are pinned to some older version right now</li>
</ul>



<a name="181317815"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317815" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317815">(Nov 21 2019 at 15:54)</a>:</h4>
<ul>
<li>it's perhaps not so well documented which version that is</li>
</ul>



<a name="181317862"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317862" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317862">(Nov 21 2019 at 15:54)</a>:</h4>
<ul>
<li>and newer versions are breaking</li>
</ul>



<a name="181317886"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317886" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317886">(Nov 21 2019 at 15:54)</a>:</h4>
<p>is this in part an infrastructure issue then?</p>



<a name="181317894"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317894" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317894">(Nov 21 2019 at 15:54)</a>:</h4>
<p>(For quite some time, e.g. I got most of that from <span class="user-mention" data-user-id="123856">@Vadim Petrochenkov</span>'s <a href="https://github.com/rust-lang/rust/issues/47048#issuecomment-377816484" target="_blank" title="https://github.com/rust-lang/rust/issues/47048#issuecomment-377816484">comment</a> which dates from April)</p>



<a name="181317918"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317918" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317918">(Nov 21 2019 at 15:55)</a>:</h4>
<p>in terms of our own limitations about what MinGW versions we can/do test in CI ?</p>



<a name="181317932"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317932" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317932">(Nov 21 2019 at 15:55)</a>:</h4>
<p>where they also mention:</p>
<blockquote>
<p>It may make sense to bump the version used by Rust from 6.3.0 to something up-to-date though.</p>
</blockquote>



<a name="181317941"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317941" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317941">(Nov 21 2019 at 15:55)</a>:</h4>
<p>Or, hold on, Before we talk more about this:</p>



<a name="181317967"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317967" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317967">(Nov 21 2019 at 15:55)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> did you want to say anything on behalf of WG-traits ?</p>



<a name="181317975"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181317975" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181317975">(Nov 21 2019 at 15:55)</a>:</h4>
<p>(Aside: I assigned <a href="https://github.com/rust-lang/rust/issues/66501" target="_blank" title="https://github.com/rust-lang/rust/issues/66501">https://github.com/rust-lang/rust/issues/66501</a> to <span class="user-mention" data-user-id="245339">@Nadrieril</span>  as well since they've been working on related things...)</p>



<a name="181318048"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318048" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318048">(Nov 21 2019 at 15:56)</a>:</h4>
<blockquote>
<p><span class="user-mention silent" data-user-id="116009">nikomatsakis</span> did you want to say anything on behalf of WG-traits ?</p>
</blockquote>
<p>oh I didn't realize it was that time ;) I can give a few quick updates</p>



<a name="181318072"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318072" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318072">(Nov 21 2019 at 15:56)</a>:</h4>
<p>Lets do that then</p>



<a name="181318083"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318083" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318083">(Nov 21 2019 at 15:56)</a>:</h4>
<p>that is, I missed your earlier ping :)</p>



<a name="181318096"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318096" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318096">(Nov 21 2019 at 15:56)</a>:</h4>
<p>ok a few notes:</p>



<a name="181318110"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318110" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318110">(Nov 21 2019 at 15:56)</a>:</h4>
<ul>
<li><span class="user-mention" data-user-id="124069">@Alexander Regueiro</span> is getting very, very close to landing support for trait object upcasts</li>
</ul>



<a name="181318211"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318211" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318211">(Nov 21 2019 at 15:57)</a>:</h4>
<ul>
<li>we've been doing some refactoring towards chalk, with the goal of revamping how chalk-rustc integration works so that they share a lot more code (notably, they should share the code that converts from rust syntax to logical predicates). Last week, we had a design meeting where we sketched out some of the next steps there (I have to move the minuts to the repo still I think)</li>
</ul>



<a name="181318315"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318315" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318315">(Nov 21 2019 at 15:58)</a>:</h4>
<ul>
<li><span class="user-mention" data-user-id="232957">@Jack Huey</span> has been doing work on fixing the handling of coinduction logic and generally refactoring the chalk engine, which is cool. And last night I learned they live in the greater Boston area, which is also cool. :)</li>
</ul>



<a name="181318391"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318391" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318391">(Nov 21 2019 at 15:59)</a>:</h4>
<blockquote>
<p>is getting very, very close to landing support for trait object upcasts</p>
</blockquote>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> speaking of... could we cherry-pick the drive-by cosmetics changes to a separate PR? feels hard to read the PR otherwise with those in</p>



<a name="181318392"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318392" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318392">(Nov 21 2019 at 15:59)</a>:</h4>
<ul>
<li>There's been slow progress investigating a soundness hole in the handling of <code>dyn Trait</code> (<a href="https://github.com/rust-lang/rust/issues/57893" target="_blank" title="https://github.com/rust-lang/rust/issues/57893">#57893</a>). I've reported on this a few times at lang team meetings, but it looks like any sort of fix may wind up being somewhat noticeable.</li>
</ul>



<a name="181318448"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318448" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318448">(Nov 21 2019 at 15:59)</a>:</h4>
<blockquote>
<p><span class="user-mention silent" data-user-id="116009">nikomatsakis</span> speaking off... could we cherry-pick the drive-by cosmetics changes to a separate PR? feels hard to read the PR otherwise with those in</p>
</blockquote>
<p>I agree they make it hard to read the PR. I've been debating what to suggest about it.</p>



<a name="181318539"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318539" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318539">(Nov 21 2019 at 16:00)</a>:</h4>
<p>maybe just cherry-pick yourself to a different PR or some such</p>



<a name="181318556"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318556" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318556">(Nov 21 2019 at 16:00)</a>:</h4>
<blockquote>
<ul>
<li>There's been slow progress investigating a soundness hole in the handling of <code>dyn Trait</code> (<a href="https://github.com/rust-lang/rust/issues/57893" target="_blank" title="https://github.com/rust-lang/rust/issues/57893">#57893</a>). I've reported on this a few times at lang team meetings, but it looks like any sort of fix may wind up being somewhat noticeable.</li>
</ul>
</blockquote>
<p>Currently we are analzing the regressions from a crater run. The next step after that may be some sort of RFC. I'm not sure.</p>



<a name="181318563"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318563" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318563">(Nov 21 2019 at 16:00)</a>:</h4>
<p>(should be easy the way it is structured)</p>



<a name="181318601"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318601" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318601">(Nov 21 2019 at 16:00)</a>:</h4>
<ul>
<li>I think we see the path to unblocking const generics, but we need to get going there, which is largely on me because I need to give some more feedback ...</li>
</ul>



<a name="181318631"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318631" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318631">(Nov 21 2019 at 16:01)</a>:</h4>
<p>all that said, my main goal for the next few weeks I think is going to be trying to lay out the roadmap for the year ahead</p>



<a name="181318638"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318638" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318638">(Nov 21 2019 at 16:01)</a>:</h4>
<p>unblocking const generics in chalk?</p>



<a name="181318655"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318655" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318655">(Nov 21 2019 at 16:01)</a>:</h4>
<p>in rustc, though we do have to extend chalk to support constants too</p>



<a name="181318658"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318658" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318658">(Nov 21 2019 at 16:01)</a>:</h4>
<p>in some minimal way</p>



<a name="181318756"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318756" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318756">(Nov 21 2019 at 16:02)</a>:</h4>
<p>ok, I gotta go</p>



<a name="181318758"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318758" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318758">(Nov 21 2019 at 16:02)</a>:</h4>
<p>okay well we've hit an hour (+2 minutes)</p>



<a name="181318767"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318767" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318767">(Nov 21 2019 at 16:02)</a>:</h4>
<p>thanks for the update on WG-traits <span class="user-mention" data-user-id="116009">@nikomatsakis</span> !</p>



<a name="181318774"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-11-21%20%2354818/near/181318774" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-11-21.20.2354818.html#181318774">(Nov 21 2019 at 16:02)</a>:</h4>
<p>and thanks to everyone in <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> for attending!!</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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